headers_install.pl: convert to headers_install.sh
[linux-3.10.git] / scripts / headers_install.sh
1 #!/bin/sh
2
3 if [ $# -lt 1 ]
4 then
5         echo "Usage: headers_install.sh OUTDIR [FILES...]
6         echo
7         echo "Prepares kernel header files for use by user space, by removing"
8         echo "all compiler.h definitions and #includes, removing any"
9         echo "#ifdef __KERNEL__ sections, and putting __underscores__ around"
10         echo "asm/inline/volatile keywords."
11         echo
12         echo "OUTDIR: directory to write each userspace header FILE to."
13         echo "FILES:  list of header files to operate on."
14
15         exit 1
16 fi
17
18 # Grab arguments
19
20 OUTDIR="$1"
21 shift
22
23 # Iterate through files listed on command line
24
25 FILE=
26 trap 'rm -f "$OUTDIR/$FILE" "$OUTDIR/$FILE.sed"' EXIT
27 for i in "$@"
28 do
29         FILE="$(basename "$i")"
30         sed -r \
31                 -e 's/([ \t(])(__user|__force|__iomem)[ \t]/\1/g' \
32                 -e 's/__attribute_const__([ \t]|$)/\1/g' \
33                 -e 's@^#include <linux/compiler.h>@@' \
34                 -e 's/(^|[^a-zA-Z0-9])__packed([^a-zA-Z0-9_]|$)/\1__attribute__((packed))\2/g' \
35                 -e 's/(^|[ \t(])(inline|asm|volatile)([ \t(]|$)/\1__\2__\3/g' \
36                 -e 's@#(ifndef|define|endif[ \t]*/[*])[ \t]*_UAPI@#\1 @' \
37                 "$i" > "$OUTDIR/$FILE.sed" || exit 1
38         scripts/unifdef -U__KERNEL__ -D__EXPORTED_HEADERS__ "$OUTDIR/$FILE.sed" \
39                 > "$OUTDIR/$FILE"
40         [ $? -gt 1 ] && exit 1
41         rm -f "$OUTDIR/$FILE.sed"
42 done
43 trap - EXIT